JPS5845050Y2 - finger joint machine - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a finger joint machine.

When joining boards, columns, etc. of general wood in the longitudinal direction with adhesive, process the longitudinal end surface of the wood into a finger joint shape as shown in Figure 1, apply adhesive to this part, and attach it to the mating part. They are connected by pressure contact.

Although there are various types of finger joint shapes, they are usually formed to be a continuation of a predetermined shape with a pitch of p in FIG.

Therefore, both sides (
In order to make both the upper and lower surfaces (in FIG. 1) on the same plane, the finger joint lines of both materials are shaped so that they are offset from each other by the pitch.

For the above-mentioned reasons, conventionally, in a finger jointer machine that processes the end face of wood into a finger joint line, the table is moved by ÷ pitch in order to shift the finger joint line by ÷ pitch between one side and the other of the joint parts. Alternatively, methods were taken in which two machines were prepared and used differently for each machine.

However, the former method has the drawback that the manufacturing cost of the machine is high and operation is laborious in order to move a large and heavy table, and the latter method requires twice the equipment cost.

In view of the above, this idea allows processing the finger joint shape on both sides of the joint with one machine, and
The purpose is to provide an inexpensive finger jointer machine.

The gist of this invention is to configure the cutter to be movable in the axial direction by a certain pitch.

The structure of this invention will be explained below with reference to the illustrated embodiments.

In FIGS. 2 and 4, 1 is a machine frame, and 2 is a table that is movable on the machine frame 1 in a direction perpendicular to the plane of the paper and whose upper surface forms a horizontal plane, and includes a clamp (not shown). The device is configured so that the material W can be fixed.

3 is a cutter μ, which is disposed on the side of the machine frame perpendicularly to a plane parallel to the top surface of the table 2, and is rotatably and slidably supported by bearings 4, 4 fixed to the machine 1. .

A cutter 5 is fixed to the upper end of the arm μ3 by normal means in correspondence with the end of the wood W on the table 2, and a pulley 6 is fixed to the arm μ3 near the center of both bearings 4, 4. The pulley 6 is driven by a motor (not shown) via a V-belt, and a shift ring 7 is rotatably fitted to the lower end of the arm μ3, with collars 8, 8 arranged above and below the shift ring 7. Fixed to μ3.

A projection 7a extending in the diametrical direction is provided on the outer periphery of the shift ring 7, which is pivotally connected to the central gear frame 1 of the shift lever 9, and the projection 7a slides into a groove provided at the tip of the forked portion 9a at one end. A notch pin 10 that is dynamically fitted and biased by a spring 11 is fitted to the other end of the shift lever 9 in a sliding manner. A bracket 12 is fixed in correspondence with the notch pin 10, and two holes 13a, 13b into which the notch pin 10 can be inserted are bored in the bracket 12.
When the notch pin 10 is moved between the holes 13a and 13b, the arm 3 and the cutter 5 are moved via the shift ring 7 to the finger joint 1 to the linear pitch up and down by the rotation of the shift lever 9. A shift device is configured here so as to move to.

Since the finger joint machine of this invention is constructed as described above, the notch pin 10 is inserted into the hole 13a and the ivy 5 is rotated to cut the material W. Since the finger joint profile cut while inserted in 13b is molded with a difference in pitch, when the two materials in which these fingers were molded are joined, both side surfaces of both materials will have the same plane.

In other words, according to this invention, both ends of the finger joint can be machined by simply moving the cutter by a certain pitch, so only one machine is required, and the device for moving the cutter may be replaced by a device for moving the table. It is economical as it requires less manufacturing cost.

In this invention, as shown in FIGS. 5 and 6, the housing 16 supporting the cutter arm μ 15 that fixes the cutter 14 is slidably attached to the frame 17 through a dovetail groove, and the frame 17 A bearing part 18 is provided in parallel with the housing 16, a threaded rod 19 having a flange part 19a is fitted into the bearing part 18, and the threaded rod 19 is attached to the housing 16.
The female threaded part 16a is screwed into the threaded rod 19, and the bearing part 1 is screwed into the threaded rod 19.
8 and the flange portion 19a.
A piston rod of a cylinder 21 is pivotally connected to the other end of the lever 20, a frame 17 is pivotally connected to the cylinder 21, and the lever 20 is connected to the stop pole 1 relative to the lever 20. When the lever 20 is rotated 90' by the operation of the cylinder 21 and the threaded rod 19 is rotated 90 degrees, the housing 16 is moved to the I pitch of the finger joint of the cutter 14. A shifting device configured to move equal distances can be installed.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing the finger joint alignment, Figure 2
4 to 4 show an embodiment of this invention, FIG. 2 is a front view, FIG. 3 is a side view as seen from arrow P in FIG. 2, and FIG.
A plan view taken in the direction of arrow Q in the figure, FIGS. 5 and 6 show other embodiments, FIG. 5 is a partially sectional front view, and FIG. 6 is a side view. 2...Table, 3...Arμ, 5.
...Cutter, 7...Shift ring, 9.
...Shift lever 110...Notch pin, 13a, 13b...hole.

Claims (1)

[Scope of utility model registration request] The side surface of the material is perpendicular to the axis of the rotary cutter and at a predetermined position in the direction of the axis, and the end surface of the material faces the rotary cutter. In a finger jointer machine configured to process fingers on the end face of a material by relatively moving in the direction of 1. A finger jointer machine characterized by being equipped with a shift device configured to allow a housing to move reciprocally in the axial direction in a finger joint linear ÷ pitch manner.